I think there's another factor at play here. Before, she worked for Harper's Bazaar, also other magazines. She was photographed in the capacity of an "It," girl, the one with the social life, the great wardrobe and an apparently limitless budget to fund it all. She now has her own business, and I expect she now has other interests to satisfy, and for reasons that are not necessarily apparent. For instance, she may need to wear Marni to get front row at the Marni shows. The same with Chanel, etc. You get my drift. The more she promotes specific brands, the better her standing, the more likely she will be photographed and the better her placement in the blogosphere.
My personal feeling; I think she's adorable, but because she's tiny (at least she looks petite), much of what she wears overwhelms her and is not particularly flattering.
I do get your point and everything you said is correct. I don't change my mind though.